first of all, I don't have to return 0.57 btc because, as you know chain-bet refused to pay my winnings. Its more like chain-bet owes me some btc
WTF? U seem to be a compulsive liar, who is now trying to distort the fact. Your winning was 0.57 BTC, which was sent to you twice, i.e. a total of 1.14 BTC. So, u were already owing 0.57 BTC to the house. Next chain-bet blocked a winning of 0.285 BTC of yours. So, you still owe (0.57-0.285) BTC, i.e. 0.285 BTC to the house. Below is the quote where u are admitting the fact yourself...
I'm tired of discussing that with you. If you don't get it, just be quiet